One cubic foot of gold weighs more than 1,200 pounds!
78
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Nylon is made from coal and petroleum.
42
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Most dust particles in your house come from dead skin.
48
One 75-watt bulb gives more light than three 25-watt bulbs.
57
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7